The origin of feathers
The Myioborus redstarts comprise 12 species of flush—pursuit warblers found in montane forests of the American tropics and subtropics. Why do they eat the bones? Ossicles within green finches, blackbirds, song thrushes, and house sparrows are proportionately shorter to those found in pheasants, Mallard ducks, and sea birds. The blood flow through the bird lung is at right angles to the flow of air through the parabronchi, forming a cross-current flow exchange system see illustration on the left. Reduced activity and metabolism to save energy, sometimes entered on cool evenings or seasons.
None of the over-the-counter weight loss aids worked, including garcinia cambogia. Late in 2010 the peer-reviewed Journal of Obesity published a meta-analysis of studies testing the garcinia as a weight loss aid. Of the 23 trials they identified, 12 were methodologically sound enough to include in their analysis.
The analysis revealed that some statistically significant weight loss occurred, but the magnitude of the effect is small and the clinical relevance is uncertain. They also found that gastrointestinal adverse events were twice as likely in the hydroxycitric acid group as in the placebo group.